| 摘要 |
A liquid crystal display module is provided to change the intermittent period of the light projected to a liquid crystal panel among at least two frequencies to restrict wavy noise and to control the brightness of the module easily. A liquid crystal display module comprises a liquid crystal panel(10), a panel driving part, a control part, a backlight unit(18), and a lamp driving part. The backlight unit includes a lamp to project the light to the liquid crystal panel. The lamp driving part changes at least two different frequencies according to circulation shapes. The lamp driving part includes an inverter(20), and a circulating PWM control part(22). The inverter supplies an alternating current signal of the high frequency to the lamp. The circulating PWM control part supplies the PWM signal having different frequencies per a period and interrupts the alternating signal according to the PWM signal. |
